Mount Metal Plate with 3M Adhesive for Magnetic Car Cradle-Less Mount, 4 Rectangular and 4 Round (8 Pack) These car mount metal plates are not magentic.just are working only with magnetic car mount and magnet mounts 8 pack metal mounting plates for many devices. You may share the extra thin metal plates with your family members or friends. These car mount plates are just what anyone with a magnetic mobile phone mount and a new case needs Nice quality Metal mounting plates for magnetic mounts with slick and smooth edges to reduce cut and increase safety The two different size plates are nice for multiple devices.These are ultra thin plates no any bulk to your cell phone Helpful replacement kits for magnetic car mount.